Harrow-pin.



E. DALY.

HARROW PIN.

APPLICATION 11.21) D2016, 1913.

1, 1 19,248. Patented Dec. 1, 1914.

awumo o EdifiOfld Edy 1 011 4 THE NORIHS PETERS CO-. PHOTOILHHO WASHINGVON. D C

EDMOND DALY, OF NEW MONTEREY, CALIFORNIIL,

HARROW-PIN.

Specification of Letters Patent.

Patented Dec. 1, 1914.

Application filed December 16,1913, Serial No. 807,029.

To all whom it may concern Be it known that I, EDMOND DALY, a citizen oithe United States, and a resident oi New Monterey, in the county ofMonterey and State of California, have invented certain ne 1 and usefulImprovements in Harrow-Pins, of which the following is a speciiication,reference being had to the accompanying drawings.

This invention relates to certain new and useful improvements in harrowpins, and the object of my invention is to provide a harrow pin with aremovable point so that as the point wears away the same can be removedand be replaced by a similar but sharp and pointed end.

Another object is to provide a pick, ax or other sharp edged implement,with a removable active edge, so that the same may be readily removed tobe replaced by a sharp member.

l Vith these and other objects in view, the present invention consistsin the combination and arrangement of parts as will be hereinafter morefully described and finally pointed out in the appended claims, it beingfurther understood that changes in the specific structure shown anddescribed may be made within the scope of the claims without departingfrom the spirit of the invention.

In the accompanying drawings forming a part of this specification and inwhich like numerals of reference indicate similar parts in the severalviews: Figure 1, shows an elevational view disclosing a broken portionof a harrow frame with two pins constructed according to my inventionsecured thereto. Fig. 2, shows a perspective view of a broken portion ofa harrow pin, disclosing the point as detached from the head. Fig. 3, isa view partly in section. Fig. 4;, is a section on line i, t of Fig. 1.

In my present invention I aim to provide a sharp or pointed tool with abit, which can be readily removed from the head, so that a new bit maybe readily attached.

In the accompanying drawings 1, designates a broken portion of a harrowframe, and 2, the yokes conventionally used in secl'irii'ig a harrow pinto an angle iron harrow frame. As shown, each pin includes a head orreceiving member 3, and this head or receiving member has twobevel-edged tangs 41, extending in parallel spaced relation, as clearlyshown in Fig. 2. As disclosed in Fig. 4, the longitudinal edges 5,

of the tangs are beveled, while the ends 6 of the tangs are alsobevel-edged, as is shown at 7, and each one of these beveled faces 7, istraversed by a transversely extending keri 3. These ker'fs are bestshown in Fig. 2.

The point or bit 13, has two oppositely positioned parallel extendingseats 9, the 0pposing faces of which incline toward one another, so asto snugly receive the beveledged tangs 4-, as disclosed in F im l. Eachwall formed at the lower end of each seat is directed obliquely inwardas is shown at 10, in Fig. 2, so that when the tangs 4: are

within the seats 9, the walls 10, will extend over the transverse kerfs8.

As shown in Fig. 2, the pin or bit. B, is provided with two upstandinglugs 12, and these lugs are arranged for co-action with the oppositelypositioned sockets 13, located upon opposite sides, and between thetangs r, as disclosed in Fig. 2. The sockets 13 are of a length greaterthan the length of l the lugs 12.

In securing a bit to the head after the tangs have been forced into theseats 9, the metal forming the walls 10 may be slightly driven inward,so that a part of the metal will seat within the kerfs 8. This willsecurely hold the bit against accidental detachment. 11011 it is desiredto remove the bits B, the operator securely fastens the receiving member3, and inserts a tool upon the lugs 12, the sockets 13, forming accessopenings. Then in smartly tapping or hammering upon the lugs 12, the bitwill become detached. A new bit can then be attached in the mannerdescribed. It is of course understood that a hatchet or ax bit could besimilarly secured to the head.

A harrow pin constructed according to my invention is simple andcomparatively inexpensive and is both durable and ellicient inoperation, while the bit or pin may be removed from the head orreceiving member with case, accuracy and despatch.

Having thus described my said invention,

what I claim as new and desire to secure by United States Letters Patentis:

1. In combination, a receiving member having two bevel-edged tangsextending in parallel spaced relation, each tang end being bevel-edgedand having a transversely extending kerf, and sockets located uponopposite sides between said tangs, and a removable bit having twooppositely positioned parallel extending seats, the opposing faces ofwhich incline toward one an other to receive said bevel-edged tangs, twooppositely positioned lugs extending from said bit of a length less thanthe lengthof said sockets, the Walls at the end of each seat beingdirectly obliquely inward to eX- tend over said kerfs, as and for thepurpose set forth.

2. In combination, a receiving member having two bevel-edged tangsextending in parallel. spaced relation each tang end being bevel-edgedand having a transversely extending kerf, and sockets located uponopposite sides between said tangs, and a ren oi able bit having twooppositely positioned parallel extending seats the opposing faces ofwhich incline toward one another In testimony whereof I afiiX mysignature, 25

in the presence of tWo Witnesses:

EDMOND DALY. \Vitnesses HAZEL PEREGRINE, H. M. Rosters.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

